CGM-T80 REPAIR TYPE NON SHRINKAGE GROUTING MATERIAL uses special cement, selected aggregates and additives with novel high fluidity, micro-expansion, anti-segregation to formulate. The product has characters of early strength, high strength, no shrinkage, micro-expansion, self-flow, vibration-free, non-toxic, harmless, non-aging, no pollution to water and surrounding environment, good self-tightness, anti-rust and so on.

Item

Executive Standard / Product Specifications

JC/T986-(2005)2012

Cementitious grout

GB/T50448-2015

Technical code for application of cementitious grout

CGM-T80B

Compressive strength

(Mpa)

1d

≥22

≥20

2h

≥30

3d

≥40

≥40

24h

≥50

28d

≥70

≥60

≥75

Flexural strength(Enterprise standard)

(Mpa)

2h

－

－

≥5

24h

－

－

≥8

28d

－

－

≥12

Liquidity(mm)

Initial value

≥260

≥290

≥300

30min retention value

≥230

≥260

≥270

Vertical expansion rate％

3h

－

0.1-3.5

0.5

Expansion value difference between 3h and 24h

－

0.02-0.5

0.1

1d

≥0.02

－

0.6

Reinforcement grip strength (round steel)/MPa

28d

≥4.0

－

≥4.2

Bonding strength with old concrete Strong / MPa(Enterprise standard)

28d

－

－

≥4.2

Corrosive effect on steel bars

NO

NO

NO

Bleeding rate％

≤1

0

0

Scope of application:Due to its novel early high strength performance, it is suitable for urgent repair, like highway expansion joints and traffic repair required open within 2 hours. When it is used in civil building reinforcement, the reinforced area can reach the required strength within 2 hours.

(Note: This product can be use at low temperature and the strength is not affected. Construction can be carried out in winter when the temperature is higher than -10 °C.)